A circulating ammonia water waste heat recovery energy-saving device

Abstract

The utility model discloses a kind of circulating ammonia water waste heat recovery energy-saving devices, it is related to ammonia water waste heat recovery technical field, including heat exchange box, the lower part of one end of heat exchange box is connected with cold water inlet pipe, the upper part of the other end of heat exchange box is connected with hot water outlet pipe, the inside of heat exchange box is equipped with heat exchange pipe, the both ends of heat exchange pipe are connected with first rotary pipe, second rotary pipe respectively, first rotary pipe and second rotary pipe are respectively through the both ends of heat exchange box, and first rotary pipe and second rotary pipe are all rotationally connected with heat exchange box, rotating mechanism connected with first rotary pipe is equipped on the outer wall of heat exchange box.The utility model can increase heat exchange area, improve heat exchange efficiency and ensure heat exchange uniformity.

Description

Technical Field

[0001] This utility model relates to the field of ammonia waste heat recovery technology, and in particular to an energy-saving device for recycling ammonia waste heat. Background Technology

[0002] Ammonia water is widely used as an important working medium in many industrial fields such as chemical engineering and refrigeration. During the recycling of ammonia water, it often carries a large amount of waste heat. If this waste heat cannot be effectively recovered and utilized, it will not only cause a huge waste of energy and increase the production costs of enterprises, but also cause thermal pollution to the environment, which is inconsistent with the current industrial trend of energy conservation, emission reduction, and green development. Therefore, developing an efficient and reasonable waste heat recovery device for circulating ammonia water has significant practical significance and economic value.

[0003] Currently, most existing ammonia waste heat recovery devices on the market use traditional heat exchange methods, mainly relying on simple heat exchange tubes to exchange heat with ammonia and cooling media (such as cold water). These devices have many obvious drawbacks.

[0004] In terms of heat exchange area, traditional heat exchange devices have relatively simple heat exchange tube structures, mostly straight tubes or simple coils. This structure results in limited contact area between the heat exchange tubes and the ammonia and cold water, with fewer channels for heat transfer during the heat exchange process. This prevents the waste heat in the ammonia from being fully transferred to the cold water, leading to low overall heat exchange efficiency. A large amount of waste heat remains in the ammonia and is discharged, resulting in serious energy waste. Regarding heat exchange uniformity, traditional devices lack effective water flow agitation mechanisms. During heat exchange, localized temperature differences easily form between the ammonia and cold water within the heat exchange chamber, leading to uneven heat exchange. This uneven heat exchange not only reduces the efficiency of waste heat recovery but may also affect the stability and reliability of the entire system, shortening the equipment's lifespan. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a circulating ammonia waste heat recovery energy-saving device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A circulating ammonia waste heat recovery energy-saving device includes a heat exchange box. A cold water inlet pipe is connected to the lower part of one end of the heat exchange box, and a hot water outlet pipe is connected to the upper part of the other end of the heat exchange box. A heat exchange tube is provided inside the heat exchange box. A first rotating tube and a second rotating tube are respectively connected to the two ends of the heat exchange tube. The first rotating tube and the second rotating tube pass through the two ends of the heat exchange box and are rotatably connected to the heat exchange box. A rotating mechanism connected to the first rotating tube is provided on the outer wall of the heat exchange box.

[0007] As a further improvement of this utility model, the upper end of the heat exchange box is hinged to a cover plate, and a connecting bolt is provided through the upper end of the cover plate away from the hinge. The upper end of the heat exchange box is provided with a connecting hole that mates with the connecting bolt, and a sealing gasket is installed at the lower end of the cover plate.

[0008] As a further improvement of this utility model, the rotating mechanism includes an electric motor mounted on the side wall of the heat exchange box, the output shaft of the electric motor is fixed with a second gear, and a first gear is fixedly sleeved on the side wall of the first rotating tube, the first gear meshing with the second gear.

[0009] As a further improvement of this utility model, the end of the first rotating tube away from the heat exchange tube is connected to an ammonia inlet pipe through a first rotary joint, and the end of the second rotating tube away from the heat exchange tube is connected to an ammonia outlet pipe through a second rotary joint.

[0010] As a further improvement of this utility model, sealed bearings are installed at the connection points of the first rotating tube, the second rotating tube and the heat exchange box.

[0011] As a further improvement of this utility model, the heat exchange tube has a serpentine structure.

[0012] The beneficial effects of this utility model are: The serpentine heat exchange tubes inside the heat exchange box increase the heat exchange area. Combined with the drive of the rotating mechanism, they can significantly improve the heat exchange efficiency between ammonia and cold water. The first rotating tube is driven by an electric motor through the meshing of the first and second gears to achieve stable rotation, which allows the serpentine heat exchange tubes to fully agitate the water flow in the heat exchange box and avoid the problem of uneven local heat exchange. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a circulating ammonia waste heat recovery energy-saving device proposed in this utility model; Figure 2 This is a schematic diagram of the cover plate, hinge, connecting bolts, and sealing gasket of a circulating ammonia waste heat recovery energy-saving device proposed in this utility model. Figure 3 This is a schematic diagram of the heat exchange box, heat exchange tube, first rotating tube, second rotating tube, and connecting hole of a circulating ammonia waste heat recovery energy-saving device proposed in this utility model.

[0014] In the diagram: 1 heat exchange box, 2 cover plate, 3 hinge, 4 connecting bolt, 5 hot water outlet pipe, 6 first rotating pipe, 7 first gear, 8 first rotary joint, 9 ammonia water inlet pipe, 10 second gear, 11 motor, 12 cold water inlet pipe, 13 second rotating pipe, 14 second rotary joint, 15 ammonia water outlet pipe, 16 sealing gasket, 17 connecting hole, 18 heat exchange tube. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] See Figures 1-3 A circulating ammonia waste heat recovery energy-saving device includes a heat exchange box 1. A cold water inlet pipe 12 is connected to the lower part of one end of the heat exchange box 1, and a hot water outlet pipe 5 is connected to the upper part of the other end of the heat exchange box 1. The cold water inlet pipe 12 inputs cold water into the heat exchange box 1 for heat exchange and heating. The heated water is discharged through the hot water outlet pipe 5 and used for steam boiler makeup water or other purposes, effectively saving energy. The heat exchange box 1 is equipped with a heat exchange tube 18 inside. The heat exchange tube 18 has a serpentine structure. The two ends of the heat exchange tube 18 are respectively connected to a first rotating pipe 6 and a second rotating pipe 13. The first rotating pipe 6 and the second rotating pipe 13 pass through the two ends of the heat exchange box 1, and both the first rotating pipe 6 and the second rotating pipe 13 are rotatably connected to the heat exchange box 1. Sealed bearings are installed at the connection between the first rotating pipe 6, the second rotating pipe 13 and the heat exchange box 1 to ensure sealing during rotation.

[0017] The end of the first rotating tube 6 furthest from the heat exchange tube 18 is connected to an ammonia inlet pipe 9 via a first rotary joint 8. High-temperature ammonia enters the heat exchange tube 18 through the ammonia inlet pipe 9 for heat exchange and cooling. The end of the second rotating tube 13 furthest from the heat exchange tube 18 is connected to an ammonia outlet pipe 15 via a second rotary joint 14. The cooled ammonia is discharged through the ammonia outlet pipe 15 and returned to the original circulating ammonia pipeline, where it mixes with the original circulating ammonia in the pipeline and is sprayed at the coke oven bridge pipe to cool the raw coal gas. The outer wall of the heat exchange box 1 is equipped with a rotating mechanism connected to the first rotating tube 6.

[0018] In this utility model, the upper end of the heat exchange box 1 is hinged to a cover plate 2 via a hinge 3. A connecting bolt 4 is provided through the upper end of the cover plate 2 away from the hinge 3. The upper end of the heat exchange box 1 is provided with a connecting hole 17 that mates with the connecting bolt 4. A sealing gasket 16 is installed at the lower end of the cover plate 2. The cover plate 2 is provided so that the heat exchange box 1 can be easily maintained by opening and closing the cover plate 2.

[0019] The rotating mechanism includes a motor 11 mounted on the side wall of the heat exchange box 1. The output shaft of the motor 11 is fixed with a second gear 10. A first gear 7 is fixedly sleeved on the side wall of the first rotating tube 6. The first gear 7 meshes with the second gear 10. By starting the motor 11, the second gear 10 is driven to rotate. Since the second gear 10 meshes with the first gear 7, it can drive the first gear 7 to rotate. The first gear 7 drives the first rotating tube 6 to rotate, and the first rotating tube 6 drives the heat exchange tube 18 to rotate. By utilizing the rotation of the heat exchange tube 18, the heat exchange tube 18 can fully contact the water inside the heat exchange box 1 for heat exchange, thereby improving the heat exchange effect.

[0020] In use, high-temperature ammonia water enters the first rotary joint 8 through the ammonia water inlet pipe 9, then flows into the first rotating tube 6 and then into the serpentine heat exchange tube 18. Simultaneously, cold water enters the heat exchange box 1 through the cold water inlet pipe 12. The starting motor 11 drives the second gear 10, whose output shaft is fixed, to rotate. The second gear 10 meshes with the first gear 7, causing the first gear 7 to rotate, which in turn drives the first rotating tube 6 to rotate. The first rotating tube 6 then drives the serpentine heat exchange tube 18 to rotate, bringing the heat exchange tube 18 into contact with the cold water inside the heat exchange box 1. With full contact heat exchange, the high-temperature ammonia water flows in the serpentine heat exchange tube 18, transferring heat to the cold water and raising its temperature. The low-temperature ammonia water after heat exchange flows out of the heat exchange tube 18 and enters the second rotary tube 13, then exits through the second rotary joint 14 from the ammonia water outlet pipe 15 and returns to the original circulating ammonia water pipeline. After mixing with the original circulating ammonia water in the pipeline, it is sprayed at the coke oven bridge pipe to cool the raw coal gas. Meanwhile, the water that has been heated by heat exchange is discharged from the hot water outlet pipe 5 at the other end of the heat exchange box 1 and used for steam boiler makeup water or other purposes.

[0021] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A circulating ammonia water waste heat recovery energy-saving device, comprising a heat exchange box (1), characterized in that, A cold water inlet pipe (12) is connected to the lower part of one end of the heat exchange box (1), and a hot water outlet pipe (5) is connected to the upper part of the other end of the heat exchange box (1). A heat exchange tube (18) is provided inside the heat exchange box (1). A first rotating pipe (6) and a second rotating pipe (13) are respectively connected to the two ends of the heat exchange tube (18). The first rotating pipe (6) and the second rotating pipe (13) pass through the two ends of the heat exchange box (1) respectively, and the first rotating pipe (6) and the second rotating pipe (13) are rotatably connected to the heat exchange box (1). A rotating mechanism connected to the first rotating pipe (6) is provided on the outer wall of the heat exchange box (1).

2. The device according to claim 1, wherein, The upper end of the heat exchange box (1) is hinged to a cover plate (2) by a hinge (3). A connecting bolt (4) is provided through the upper end of the cover plate (2) on the side away from the hinge (3). The upper end of the heat exchange box (1) is provided with a connecting hole (17) that cooperates with the connecting bolt (4). A sealing gasket (16) is installed at the lower end of the cover plate (2).

3. The device according to claim 1, wherein, The rotating mechanism includes an electric motor (11) mounted on the side wall of the heat exchange box (1), the output shaft of the electric motor (11) is fixed with a second gear (10), and a first gear (7) is fixedly sleeved on the side wall of the first rotating tube (6), the first gear (7) meshing with the second gear (10).

4. The device according to claim 1, wherein, The end of the first rotating tube (6) away from the heat exchange tube (18) is connected to an ammonia inlet pipe (9) through a first rotary joint (8), and the end of the second rotating tube (13) away from the heat exchange tube (18) is connected to an ammonia outlet pipe (15) through a second rotary joint (14).

5. The device according to claim 1, wherein, Sealed bearings are installed at the connection points between the first rotating tube (6), the second rotating tube (13) and the heat exchange box (1).

6. The device according to claim 1, wherein, The heat exchange tube (18) has a serpentine structure.

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